# ETL

> Source: https://sukruyusufkaya.com/en/glossary/etl
> Updated: 2026-05-13T20:59:36.661Z
> Type: glossary
> Category: veri-muhendisligi-ve-ai-altyapisi
**TLDR:** A classic data integration approach in which data is extracted from source systems, transformed, and then loaded into a target analytical environment.

<p>ETL is one of the foundational architectural patterns in data engineering. In this approach, data is first extracted from source systems, then cleaned and transformed into the desired target model, and finally loaded into a warehouse or analytical environment. ETL is especially important in enterprise settings where transformation logic must run in a centralized, controlled, and auditable way. Strong ETL design balances data consistency with operational sustainability.</p>